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Corrosion Behaviour of British Magnox Waste Glass in Pure Water

  • H. U. Zwicky (a1), B. Grambow (a2), C. Magrabi (a3), E. T. Aerne (a1), R. Bradley (a3), B. Barnes (a3), Th. Graber (a1), M. Mohos (a1) and L. C. Werme (a4)...

Abstract

The corrosion behaviour of Magnox Waste (MW) glass in deionized water has been investigated under the aegis of the Japanese-Swedish-Swiss (JSS) project. The studies carried out at PSI and BNFL included static leaching and corrosion layer characterization. The results were used by HMI to derive the modelling parameters for the MW glass with the PHREEQE/GLASSOL codes. The silica concentration was found to strongly influence the corrosion rate of the glass. The MW glass selectively retains Cs due to the formation of a Cs-Mg-Al-Si-O-rich layer on its surface.

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1. JSS-Project Phases I-V. JSS Technical Reports 84–03, 85–01, 86–01, 87–01, 88–02, SKB Stockholm (a, 1984), (b, 1985), (c, 1986), (d, 1987), (e, 1988).
2. Grambow, B., JSS Technical Report 87–02, SKB Stockholm (1987).
3. Materials Characterization Center, Nuclear Waste Materials Handbook, Vol. 1, Test Methods, DOE/TIC-11400, Pacific Northwest Laboratory, Richland, Washington (1981).
4. Bart, G., Aerne, E.T., Zwicky, H.U., Nuclear Instr. and Meth. in Phys. Res. B 17, 127 (1986).
5. Grambow, B., Hermansson, H.P., Björner, I.K., Werme, L., in Scientific Basis for Nuclear Waste Management IX, edited by Werme, L., Mater. Res. Soc. Proc. 50, North-Holland, New York (1986).
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  • EISSN: 1946-4274
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